18QHTF21-12.031125-PD

Overview

The 18QHTF21-12.031125-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 12.031125 MHz with LVCMOS output logic and a 1.8V supply voltage. The device features a Standby (Power Down) function and is housed in a 4-SMD, No Lead package measuring 2.0x1.6 mm.

Feature Summary

• Supports Standby mode for power management
• LVCMOS output logic compatibility
• Hermetic ceramic leadless SMD construction

Applications

• General timing clock applications
• Embedded systems requiring low-power oscillators
• Consumer electronics with space constraints

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD no-lead package dimensions fit within your PCB layout constraints. Check for any RoHS compliance documentation if required for your manufacturing standards.

Selection Notes

Select this component when a precise 12.031125 MHz reference is needed with minimal footprint. The 1.8V operation suits low-voltage digital circuits. Consider the standby feature if power efficiency during idle states is critical. Compare against other Mercury QHTF series variants for different voltage or frequency needs.

Part Context

This part belongs to the QHTF series from Mercury Electronic Ind. Co., Ltd., which offers hermetic ceramic leadless SMD packages. The series supports frequencies from 1.0 MHz to 200 MHz across three supply voltages. The 'PD' suffix typically indicates a specific packaging or handling variant within their product line.

Replacement Considerations

Direct substitutes include other 12.031125 MHz LVCMOS oscillators in 2.0x1.6mm packages from Mercury, such as the 18QHTF21-12.000-PD if frequency tolerance allows. Verify pinout and electrical characteristics match exactly before substitution.